Tetrahedron letters

One pot direct synthesis of oxazolines, benzoxazoles, and oxadiazoles from carboxylic acids using the Deoxo-Fluor reagent

CO Kangani, DE Kelley, BW Day

文献索引：Kangani, Cyrous O.; Kelley, David E.; Day, Billy W. Tetrahedron Letters, 2006 , vol. 47, # 37 p. 6497 - 6499

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被引用次数: 61

摘要

Numerous methods for the synthesis of oxazolines have been reported. Widely used methods are (i) reaction of amino alcohols with carboxylic acids 9 or carboxylic acid derivatives (ortho esters, nitriles, imino ether hydrochlorides, and acyl benzotriazoles); 10 and (ii) cyclodehydration of β-hydroxyamides with a number of reagents including the Burgess reagent, diethylaminosulfur trifluoride (DAST), PPh 3 /DEAD, and the Vilsmeier reagent. 11 Oxadiazoles have been ...